https://unixgeeks.net/posts/2022/10/check-for-openbsd-ffs-filesystems-version/ https://unixgeeks.net/posts/2022/10/check-for-openbsd-ffs-fi... may be helpful. t

https://unixgeeks.net/posts/2022/10/check-for-openbsd-ffs-filesystems-version/ https://unixgeeks.net/posts/2022/10/check-for-openbsd-ffs-fi... may be helpful. tl;dr - timestamps and blocknumbers are 64b in FFS2, intro'd in 4.2 and made the default (more or less) in 6.7